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  • High‐resolution dataset of stable carbon isotope of dissolved inorganic carbon ( δ13C ‐ DIC ) from the North Atlantic Ocean
Title: High‐resolution dataset of stable carbon isotope of dissolved inorganic carbon ( δ13C ‐ DIC ) from the North Atlantic Ocean
Abstract The stable isotope ratio of dissolved inorganic carbon (δ13C‐DIC) is a valuable tracer for investigating carbon cycling in aquatic environments. However, its potential remains underutilized due to limited data availability. Fewer than 15% of cruise samples are analyzed forδ13C‐DIC, as isotope analysis using isotope ratio mass spectrometry is labor‐intensive and restricted to onshore laboratories. We present over 3500δ13C‐DIC measurements from the 2023 Global Ocean Ship‐based Hydrographic Investigations Program A16N cruise in the North Atlantic. Notably, three‐quarters of these measurements were conducted onboard using a CO2extraction device coupled with cavity ring‐down spectroscopy, a more efficient and cost‐effective method. This extensive dataset providesδ13C‐DIC values with spatial resolution comparable to other ocean carbonate chemistry and biogeochemical parameters. This dataset supports improved quantification of anthropogenic CO2uptake and storage, and may facilitate the development of algorithms to estimateδ13C‐DIC in under sampled regions.  more » « less
Award ID(s):
2438144 2446658 2123768
PAR ID:
10648737
Author(s) / Creator(s):
 ;  ;  ;  ;  ;  
Publisher / Repository:
Wiley Periodicals LLC
Date Published:
Journal Name:
Limnology and Oceanography Letters
Volume:
10
Issue:
5
ISSN:
2378-2242
Page Range / eLocation ID:
670 to 679
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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